Science
Mechanism of Action
This ingredient's mechanism of action stems from its unique amphoteric properties, characterized by a cyclical lactone ring and a long fatty acid chain. The lactone ring undergoes reversible opening and closing in response to pH fluctuations. At the skin's physiological pH (approximately 4.5 to 5.5), both its oil-soluble lactone and water-soluble 5-hydroxy fatty acid forms exist in dynamic equilibrium. This allows it to re-establish a balanced oil and water content within epidermal tissue, providing balanced moisturization, improving skin elasticity, and acting as an effective pH buffering agent to reduce irritancy.
Research
Clinical Evidence
High confidence1.0-5.0%
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Meadowfoam Delta-Lactone is an amphoteric compound, allowing its isomeric structures to dynamically shift between oil and water solubility based on pH. At skin's physiological pH (approximately 4.5 to 5.5), both the oil-soluble lactone and water-soluble 5-hydroxy fatty acid forms are present in equilibrium. Formulations containing this ingredient have demonstrated stability across a wide pH range of 2 to 11.
Safety
Safety Profile
Meadowfoam Delta-Lactone is generally considered safe for topical application in cosmetic products, with adverse reactions being relatively uncommon. A specific CIR report concluding 'safe as used' with a maximum concentration has not been found. Data regarding topical usage during pregnancy and breastfeeding are currently lacking, and consultation with a healthcare professional is advised. This ingredient is not listed on EWG's Skin Deep Restricted or Unacceptable Lists.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Meadowfoam Delta-Lactone is a valuable, versatile ingredient that significantly enhances skin hydration, texture, and elasticity across all skin types, while effectively mitigating potential irritation from other formulation components.
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